I know I've been posting here a lot but you guys have been so helpful. I guess asking questions and seeking advice never hurts! So I just introduced my first fish to my 40 gallon, it's cycle is finished and all water params are good, ammonia is up to .25 today but I assume that because of the new fish. Here's the params: http://imgur.com/IFUUZl8 The fish I added are 4 baby kuhlies, barely over an inch long, (planning on 10 eventually) and 2 pearl gourami. The pearls have been hiding when I'm around, but come out when they can't see me. They seem healthy and are swimming normally. It's the kuhlies I am slightly concerned about. 1 of them is extremely active and constantly swimming along the glass, up to the surface and back down. The other 3 I haven't seen since last night. I'm assuming they're hiding, because they're nocturnal and they just went through a lot of scary stuff for a fish. It's the one swimming around I'm the most worried about. Also all their gills are very bright pink/reddish, I looked it up and a lot of people said it was normal but I thought I'd mention it. The top is totally secure, nowhere that they can jump out. Idk maybe I'm worrying about nothing but this is my first tank other than a little 10 gallon with some guppies and endlers, and I would hate to accidentally harm or god forbid kill any of the little guys I killed enough fish when I didn't know about them while setting up the 10 gallon. I was the noob that didn't know about cycling. I've done dozens of hours of research since then though, but very little hands on experience.